Contactlint
Validate emails (MX, disposable, role, typo) and phone numbers, singly or in batches, for AI agents.
ContactLint provides email and phone validation for signup forms and AI agents. It offers 100 free checks every month, then $9 for 5,000 checks. It does not connect to mail servers, so it cannot confirm that a mailbox exists or detect catch-all domains.
It provides a hosted MCP server that AI agents can use without installation. It parses phone numbers with libphonenumber metadata and returns valid and possible flags, line type, region, and E.164 formats.
Summary drafted from the project's own website. Every sentence is backed by text on that page and was reviewed before publishing.